Surrey · GU1, GU2, GU3, GU4
Annexes in Guildford
An annexe is self-contained living accommodation on the same plot as a main house, complete with its own kitchen and bathroom facilities, built either as a new detached structure, a conversion of an existing outbuilding, or an extension with its own entrance.
In Guildford, that covers Onslow Village, Merrow, Burpham, Stoughton, Westborough, Charlotteville, Shalford. Guildford is Surrey's county town, with a historic cobbled High Street, a substantial university population, and residential areas ranging from Victorian terraces near the centre to larger detached houses in the surrounding hills, close to the North Downs and Surrey Hills.
Coverage
Areas we cover in Guildford for annexes
Property styles in Guildford
Guildford's housing stock spans Victorian and Edwardian terraces close to the town centre, substantial interwar and postwar detached housing in areas such as Onslow Village and Merrow, and newer developments on the town's edges.
Planning considerations
Guildford Borough Council is the local planning authority. The historic town centre and several residential areas are conservation areas, and parts of the borough fall within the Surrey Hills National Landscape, affecting design and materials for visible extensions.
How it works
Our annexes process
- 01
Feasibility and planning strategy
Assessing the plot, existing structures and local planning policy for ancillary accommodation, and whether a new build, conversion or extension route is best.
- 02
Design and approvals
Preparing drawings, submitting for planning permission (usually required for annexes with independent facilities) and Building Regulations.
- 03
Construction
Groundworks and structure (for a new build), or structural and fabric works to the existing building (for a conversion), followed by full services connections.
- 04
Fit-out and completion
Kitchen and bathroom fit-out, decoration, and Building Control sign-off.
Also in this area
Other services we provide in Guildford
Nearby coverage
Annexes in nearby areas
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FAQs
Annexes in Guildford: FAQs
Do you provide annexes across all of Guildford?
Yes, we cover the GU1, GU2, GU3 and GU4 postcode areas in full, including Onslow Village, Merrow, Burpham, Stoughton, Westborough, Charlotteville, Shalford.
Do I need planning permission for an annexe?
Usually yes, because independent cooking, sleeping and washing facilities mean the structure is not treated as a simple outbuilding. Some annexes intended purely as ancillary accommodation for the main house can fall under permitted development, but this depends on size, position and local policy, which we check during feasibility.
Can an existing garage or outbuilding be converted into an annexe?
Yes, provided the structure is suitable and can be brought up to full Building Regulations standard for insulation, damp-proofing and services. We assess this as part of the feasibility stage alongside a new-build option.
Are there conservation areas across Guildford?
Yes, several, including the historic town centre and parts of some residential neighbourhoods. We check the position for your specific address as part of the feasibility assessment.
Get a quote for annexes in Guildford
Tell us about the property and what you have in mind, and we'll arrange a site visit.
Last reviewed 2026-07-28.